[jedc]

(Former submariner here.)

Elevated CO2 in submarines absolutely impairs performance. One example: there was a guy on my boat who got migraines when CO2 got too high - he was useless. Luckily the fix is simple - just turn on another CO2 scrubber.

There's nothing special about a submarine that makes CO2 somehow different than anywhere else.

[amluto]

I recall this study and maybe another one:

https://pubmed.ncbi.nlm.nih.gov/29789085/

I’m definitely not an expert.

[4gotunameagain]

What if you're low on sorbent and can't turn on another scrubber ?

I wonder if sorbent quantity correlates with performance